Nichia 500D, 510D and 520D Series LEDs The 500D, 510D and 520D LEDs, from Nichia, are a family of single colour through-hole LEDs. They have a 5 mm (T-1 3/4) package with a clear lens. Available in colour or cool and warm white options; the 5x0D series are suitable for applications such as portable light, signage and decorative lighting. 可见光 LED，Nichia Nichia Corporation 是发光二极管 (LED) 的创新型制造商。 他们设计和制造 LED，用于 LCD 背光、汽车和其他一般照明应用。 Nichia 因开发屡获大奖的蓝色 LED 而著名，它是 LED 工业的领先者。